IEVref:
722-02-19
ID:
Language:
en
Status:
Standard
Term:
harmonic telephone ringer
Synonym1:
tuned telephone ringer
Synonym2:
Synonym3:
Symbol:
Definition:
a telephone bell which responds only to alternating current within a very narrow frequency band and which may be used for selective ringing
Publication
date
:
1992-11
Source
Replaces:
Internal notes:
CO remarks:
TC/SC remarks:
VT remarks:
Domain1:
Domain2:
Domain3:
Domain4:
Domain5:
a telephone bell which responds only to alternating current within a very narrow frequency band and which may be used for selective ringing